Compact type automatic throttling drilling monitoring manifold and skid-mounted equipment

Abstract

The utility model discloses a compact type automatic throttling drilling monitoring manifold and skid-mounted equipment. The equipment comprises a skid-mounted structure, an automatic throttling monitoring manifold assembly, a liquid-gas control system and an anti-explosion control and power distribution device, wherein the automatic throttling monitoring manifold assembly, the liquid-gas control system and the anti-explosion control and power distribution device are assembled on the skid-mounted structure into a whole; the automatic throttling monitoring manifold assembly comprises an automatic throttling manifold and a monitoring manifold; the automatic throttle manifold is communicated with the monitoring manifold through a third flange short section, and the automatic throttle manifold and the monitoring manifold are both vertically arranged; the automatic throttling manifold and the monitoring manifold are fixed to the skid-mounted structure through supporting pieces. The device is compact in structure, solves the problems that the marine drilling platform is insufficient in space placement, too large in occupied area and the like, can be used in different conditions and environments, and reduces the climbing risk of hoisting personnel at an upper hoisting point.

Description

Technical Field

[0001] The utility model relates to a drilling choke manifold, in particular to a compact automatic choke drilling monitoring manifold and skid-mounted equipment. Background Art

[0002] The application of choke manifolds in well control technology is increasing day by day. The pressure control drilling technology is an adaptive drilling technology used to accurately control the annulus pressure of the entire wellbore. Its purpose is to determine the downhole environmental pressure limit and control the annulus pressure profile of the wellbore accordingly. The pressure control drilling technology can accurately control the annulus pressure distribution of the entire wellbore, solve the problems of easy kick and lost circulation during drilling and completion in the marine narrow density window formation, and at the same time effectively solve the problems such as reservoir protection in low-permeability oil and gas fields and improve the mechanical drilling speed.

[0003] The choke manifold generally consists of two or more choke valves and a multi-channel high-pressure manifold. The fluid flows into the high-pressure manifold from the choke valve, and the kill operation is mainly carried out through the throttling effect of the choke valve to replace the contaminated mud in the well, and at the same time control the casing pressure and riser pressure at the wellhead to restore the pressure control of the mud column on the bottom hole and stop the overflow; through the pressure relief effect of the choke valve, the inlet casing pressure is reduced to achieve "soft shut-in", and through the large flow discharge effect of the blowout preventer valve, the wellhead blowout preventer group is protected.

[0004] For a long time, offshore pressure control drilling mainly relied on onshore pressure control equipment, and prominent problems such as large floor area, low control accuracy, and slow response speed restricted the development of offshore pressure control drilling technology. Content of the Utility Model

[0005] The purpose of the utility model is to provide a compact automatic choke drilling monitoring manifold and skid-mounted equipment, which solves the problem of large floor area of the existing choke manifold. The spatial structure is optimized to form a compact skid-mounted equipment, which is convenient for transportation, handling, on-site placement and use at the same time.

[0006] In order to achieve the above object, the utility model provides a compact automatic throttling drilling monitoring manifold and skid-mounted equipment, which comprises: a skid-mounted structure, an automatic throttling monitoring manifold assembly, a liquid-gas control system, and an explosion-proof control and power distribution device; wherein, the automatic throttling monitoring manifold assembly, the liquid-gas control system, and the explosion-proof control and power distribution device are assembled on the skid-mounted structure as a whole; the automatic throttling monitoring manifold assembly comprises: an automatic throttling manifold and a monitoring manifold; the automatic throttling manifold is communicated with the monitoring manifold through a third flange nipple, and both the automatic throttling manifold and the monitoring manifold are arranged vertically; both the automatic throttling manifold and the monitoring manifold are fixed on the skid-mounted structure through support members; the two hydraulic throttle valves of the automatic throttling manifold are arranged in an I-shaped layout, and both hydraulic throttle valves are connected to the liquid-gas control system for controlling the hydraulic pressure in the automatic throttling manifold; a first pressure monitoring device for monitoring pressure is arranged in the automatic throttling monitoring manifold assembly; a second pressure monitoring device for monitoring pressure and a flow monitoring device for monitoring flow are arranged in the monitoring manifold; the first pressure monitoring device, the second pressure monitoring device, and the liquid-gas control system are all connected to the explosion-proof control and power distribution device through cables.

[0007] Preferably, the automatic choke manifold comprises: an inlet flanged union, an inlet flat four-way, a first choke pipeline, a second choke pipeline, a third choke pipeline, a first three-way, a first right-angle two-way, a second flat three-way, a first flange nipple and a second flange nipple; wherein, the four interfaces of the inlet flat four-way are respectively communicated with the inlet flanged union and the inlets of the first choke pipeline, the second choke pipeline and the third choke pipeline; the inlet flanged union is connected to the wellhead equipment; the outlet of the first choke pipeline is communicated with the first three-way, the outlet of the second choke pipeline is communicated with the second flat three-way, the outlet of the third choke pipeline is communicated with the first right-angle two-way, the first right-angle two-way and the second flat three-way are communicated through the first flange nipple, the second flat three-way and the first three-way are communicated through the second flange nipple, and the first three-way and the monitoring manifold are communicated through a third flange nipple; a first manual flat valve, a first choke valve and a third manual flat valve are sequentially arranged on the first choke pipeline from the inlet to the outlet; a fifth manual flat valve is arranged on the second choke pipeline; a second manual flat valve, a second choke valve and a fourth manual flat valve are sequentially arranged on the third choke pipeline from the inlet to the outlet; wherein, the first choke valve and the second choke valve are the hydraulic choke valves; the first choke valve, the inlet flat four-way and the second choke valve are vertically and oppositely arranged in a vertical layout, and the first choke valve and the first three-way, the inlet flat four-way and the second flat three-way, the second choke valve and the first right-angle two-way are horizontally and oppositely arranged; wherein, the oil inlet and outlet pipelines of the liquid-gas control system are respectively connected to the oil inlet and outlet ports of the first choke valve and the second choke valve.

[0008] Preferably, the oil inlet and outlet pipelines are fixed in the skid-mounted structure through clamps to prevent excessive vibration during use and cause equipment and personnel risks.

[0009] Preferably, an interface for installing a first pressure monitoring device is arranged on the inlet flanged union, and a first pressure monitoring device is arranged at this interface; the first pressure monitoring device is connected to the explosion-proof control and power distribution device through a cable.

[0010] Preferably, the monitoring manifold includes: a second four-way joint, a first monitoring pipeline, a second monitoring pipeline, a third four-way joint, and an outlet flange union; wherein, three interfaces of the second four-way joint are respectively communicated with the first three-way joint and the inlets of the first monitoring pipeline and the second monitoring pipeline, and the remaining one interface is fixedly connected with a first flange blind plate; three interfaces of the third four-way joint are respectively communicated with the outlet flange union and the outlets of the first monitoring pipeline and the second monitoring pipeline, and the remaining one interface of the third four-way joint is fixedly connected with a third flange blind plate; a sixth manual flat valve, a flow monitoring device, a third three-way joint, a second right-angle elbow, and a seventh manual flat valve are sequentially arranged on the first monitoring pipeline from the inlet to the outlet; wherein, the sixth manual flat valve and the flow monitoring device are connected by a first conversion flange; the third three-way joint and the second right-angle elbow are communicated by a fourth flange nipple; the second right-angle elbow and the seventh manual flat valve are communicated by a fifth flange nipple; one interface of the third three-way joint is fixedly connected with a second flange blind plate; pressure measuring holes are arranged on both the first flange blind plate and the second flange blind plate, and the pressure measuring holes are used for installing a pressure transmitter or a mechanical pressure gauge for pressure monitoring; an eighth manual flat valve is arranged on the second monitoring pipeline; the eighth manual flat valve and the third four-way joint are communicated by a sixth flange nipple; the second four-way joint, the sixth manual flat valve, the flow monitoring device, and the third three-way joint, and the third four-way joint, the second right-angle elbow, and the seventh manual flat valve are vertically and oppositely arranged in a vertical layout; the second four-way joint and the third three-way joint, and the third four-way joint and the second right-angle elbow are horizontally and oppositely arranged.

[0011] Preferably, the first three-way joint is a flat three-way joint or a right-angle three-way joint, and the second four-way joint is a right-angle four-way joint.

[0012] Preferably, a second pressure monitoring device for monitoring the pressure of the manifold is arranged on the sixth flange nipple; the second pressure monitoring device is connected with the explosion-proof control and power distribution device through a cable.

[0013] Preferably, flange support members are arranged on the flanges for connecting the first throttle valve and the third manual flat valve, the inlet plane four-way joint and the second plane three-way joint, and the second throttle valve and the fourth manual flat valve; the flange support members are fixedly connected with the skid-mounted structure; main support members are arranged at the bottoms of the second four-way joint, the third four-way joint, and the flange connecting the eighth manual flat valve and the sixth flange nipple; the main support members are fixedly connected with the bottom of the skid-mounted structure.

[0014] Preferably, the first to eighth manual flat valves all adopt a rising-stem structure.

[0015] Preferably, a wire duct for the line connection of the explosion-proof control and power distribution device is provided on the skid-mounted structure; corner fittings, forklift holes, lower lifting points, a top cover, a ladder, wire stoppers, support plates, and towing hooks are provided on the skid-mounted structure; among them, the corner fittings are arranged at the top corners of the skid-mounted structure; the forklift holes and the lower lifting points are arranged at the bottom end of the skid-mounted structure; the top cover is arranged on the top of the skid-mounted structure; the ladder is arranged on the side of the skid-mounted structure; the wire stoppers are symmetrically arranged on both sides of the skid-mounted structure; the support plates are arranged between the bottom of the skid-mounted structure and the columns.

[0016] The compact automatic throttling drilling monitoring manifold and skid-mounted equipment of the present utility model solve the problem of large floor area of the existing throttling manifold and have the following advantages:

[0017] (1) The space structure of the compact automatic throttling drilling monitoring system and skid-mounted equipment of the present utility model is optimized to form a compact skid-mounted equipment, which is convenient for transportation, handling, on-site placement and use, and solves the problems of insufficient space placement on the offshore drilling platform and excessive floor area of the equipment;

[0018] (2) The skid-mounted structure of the present utility model is provided with upper and lower lifting structures, which can be used under different conditions, reducing the risk of climbing for the lifting personnel at the upper lifting point;

[0019] (3) A flange blind plate is provided in the automatic throttling monitoring manifold assembly of the present utility model, which is convenient for cleaning after being blocked during the later use process. Description of the Drawings

[0020] Figure 1 is a three-dimensional view of the compact automatic throttling drilling monitoring manifold and skid-mounted equipment of the present utility model.

[0021] Figure 2 is a three-dimensional view of the automatic throttling monitoring manifold assembly of the present utility model.

[0022] Figure 3 is a front view of the automatic throttling monitoring manifold assembly of the present utility model.

[0023] Figure 4 is a right view of the automatic throttling monitoring manifold assembly of the present utility model.

[0024] Figure 5 is a front view of the compact automatic throttling drilling monitoring manifold and skid-mounted equipment of the present utility model.

[0025] Figure 6 is a rear view of the compact automatic throttling drilling monitoring manifold and skid-mounted equipment of the present utility model.

[0026] Figure 7This is a side view of the compact automatic throttling drilling monitoring manifold and skid-mounted equipment of the present utility model. Detailed implementation manners

[0027] The technical solutions in the embodiments of the present utility model will be clearly and completely described below. Apparently, the described embodiments are only a part of the embodiments of the present utility model, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0028] A compact automatic throttling drilling monitoring manifold and skid-mounted equipment, see Figures 1 to 7 , the equipment includes: a skid-mounted structure 1, an automatic throttling monitoring manifold assembly 2, a liquid-gas control system 3, and an explosion-proof control and power distribution device. Among them, the automatic throttling monitoring manifold assembly 2, the liquid-gas control system 3, and the explosion-proof control and power distribution device 4 are assembled on the skid-mounted structure 1 and integrated into one body by welding or connectors.

[0029] The automatic throttling monitoring manifold assembly 2 includes: an automatic throttling manifold and a monitoring manifold; the automatic throttling manifold and the monitoring manifold are connected through a third flange nipple 2-16, and both the automatic throttling manifold and the monitoring manifold are arranged vertically. Both the automatic throttling manifold and the monitoring manifold are fixed on the skid-mounted structure 1 through support members. Channels are selected according to the on-site working conditions for throttling and pressure reduction. Among them, two groups of throttle valve channels are vertically arranged, and the two valves are in an I-shaped structure, reasonably utilizing the longitudinal space to achieve a compact layout structure. During the actual operation process, on-site operation technicians can open the corresponding manual flat valve according to the requirements.

[0030] The two hydraulic throttle valves of the automatic throttling manifold are in an I-shaped layout, and both hydraulic throttle valves are connected to the liquid-gas control system 3 for controlling the hydraulic pressure in the automatic throttling manifold. A first pressure monitoring device 2-2 for monitoring pressure is provided in the automatic throttling monitoring manifold assembly 2; a second pressure monitoring device 2-31 for monitoring pressure and a flow monitoring device 2-21 for flow monitoring are provided in the monitoring manifold. The first pressure monitoring device 2-2, the second pressure monitoring device 2-31, the flow monitoring device 2-21, and the liquid-gas control system 3 are all connected to the explosion-proof control and power distribution device 4 through cables.

[0031] The liquid-gas control system 3 is a device known to those skilled in the art, and it has a manual-automatic integrated structure for realizing manual operation and remote control system control; among them, the liquid-gas control system is provided with an accumulator as the main power source, and the motor pump oil circuit control, the pneumatic booster oil circuit control, and the manual pump oil circuit control can all supplement pressure for the accumulator.

[0032] The explosion-proof control and power distribution device 4 is a device known to those skilled in the art, which contains power distribution system components, liquid-gas control system components, and a PLC monitoring and control system component. The PCL monitoring and control system is composed of modules such as Siemens 1200. Among them, the automatic throttle monitoring pipes are aggregated into the first pressure monitoring device 2-2, the second pressure monitoring device 2-31, and the flow monitoring device 2-21 of 2, and the liquid-gas control system 3 are all introduced into the device through cables and connected to the explosion-proof control and power distribution device 4 through explosion-proof aviation plugs.

[0033] According to a specific embodiment of the present invention, the automatic throttle manifold includes: an inlet flange union 2-1, an inlet flat four-way 2-3, a first throttle pipeline, a second throttle pipeline, a third throttle pipeline, a first three-way 2-11, a first right-angle two-way 2-12, a second flat three-way 2-13, a first flange nipple 2-14, and a second flange nipple 2-15. Among them, the four interfaces of the inlet flat four-way 2-3 are respectively communicated with the inlet flange union 2-1 and the inlets of the first throttle pipeline, the second throttle pipeline, and the third throttle pipeline; the inlet flange union 2-1 is connected to the wellhead equipment. The outlet of the first throttle pipeline is communicated with the first three-way 2-11, the outlet of the second throttle pipeline is communicated with the second flat three-way 2-13, the outlet of the third throttle pipeline is communicated with the first right-angle two-way 2-12, the first right-angle two-way 2-12 and the second flat three-way 2-13 are communicated through the first flange nipple 2-14, the second flat three-way 2-13 and the first three-way 2-11 are communicated through the second flange nipple 2-15, and the first three-way 2-11 and the monitoring manifold are communicated through a third flange nipple 2-16.

[0034] A first manual flat valve 2-4, a first throttle valve 2-6, and a third manual flat valve 2-8 are sequentially arranged on the first throttle pipeline from the inlet to the outlet; a fifth manual flat valve 2-10 is arranged on the second throttle pipeline; a second manual flat valve 2-5, a second throttle valve 2-7, and a fourth manual flat valve 2-9 are sequentially arranged on the third throttle pipeline from the inlet to the outlet. Among them, the first throttle valve 2-6 and the second throttle valve 2-7 are hydraulic throttle valves. Between the first throttle valve 2-6, the inlet flat four-way 2-3, and the second throttle valve 2-7, and between the first three-way 2-11, the second flat three-way 2-13, and the first right-angle two-way 2-12, they are all vertically and relatively arranged in a vertical layout, and between the first throttle valve 2-6 and the first three-way 2-11, between the inlet flat four-way 2-3 and the second flat three-way 2-13, and between the second throttle valve 2-7 and the first right-angle two-way 2-12, they are all horizontally and relatively arranged. Among them, the outlet and return oil pipelines of the liquid-gas control system 3 are respectively connected to the outlet and return oil ports of the first throttle valve 2-6 and the second throttle valve 2-7.

[0035] According to a specific embodiment of the present utility model, the inlet flange union 2-1 is provided with an interface for installing the first pressure monitoring device 2-2, and the first pressure monitoring device 2-2 is arranged at this interface. The first pressure monitoring device 2-2 is connected to the explosion-proof control and power distribution device 4 through a cable. The first pressure monitoring device 2-2 can adopt an E+H bus pressure monitoring instrument.

[0036] According to a specific embodiment of the present utility model, the monitoring manifold includes: a second four-way 2-18, a first monitoring pipeline, a second monitoring pipeline, a third four-way 2-32, and an outlet flange union 2-33. Among them, three interfaces of the second four-way 2-18 are respectively communicated with the first three-way 2-11 and the inlets of the first monitoring pipeline and the second monitoring pipeline, and the remaining one interface is fixedly connected with a first flange blind plate 2-17. Three interfaces of the third four-way 2-32 are respectively communicated with the outlet flange union 2-33 and the outlets of the first monitoring pipeline and the second monitoring pipeline, and the remaining one interface of the third four-way 2-32 is fixedly connected with a third flange blind plate 2-30.

[0037] On the first monitoring pipeline, a sixth manual flat valve 2-19, a flow monitoring device 2-21, a third three-way 2-23, a second right-angle union 2-25, and a seventh manual flat valve 2-27 are arranged in sequence from the inlet to the outlet. Among them, the sixth manual flat valve 2-19 and the flow monitoring device 2-21 are connected through a first conversion flange 2-20; the third three-way 2-23 and the second right-angle union 2-25 are communicated through a fourth flange short section 2-24; the second right-angle union 2-25 and the seventh manual flat valve 2-27 are communicated through a fifth flange short section 2-26. One interface of the third three-way 2-23 is fixedly connected with a second flange blind plate 2-22; pressure measuring holes are arranged on both the first flange blind plate 2-17 and the second flange blind plate 2-22, and these pressure measuring holes are used to install a pressure transmitter or a mechanical pressure gauge for pressure monitoring. The flow monitoring device 2-21 is used for fluid parameter monitoring and can adopt a flowmeter transmitter.

[0038] An eighth manual flat valve 2-28 is arranged on the second monitoring pipeline. The eighth manual flat valve 2-28 and the third four-way 2-32 are communicated through a sixth flange short section 2-29. During the design operation process, on-site operation technicians can open the corresponding manual flat valve according to requirements to monitor the fluid and engineering conditions.

[0039] Between the second four-way 2-18, the sixth manual flat valve 2-19, the flow monitoring device 2-21, and the third three-way 2-23, and between the third four-way 2-32, the second right-angle union 2-25, and the seventh manual flat valve 2-27, they are all vertically and oppositely arranged in a vertical layout; between the second four-way 2-18 and the third three-way 2-23, and between the third four-way 2-32 and the second right-angle union 2-25, they are all horizontally and oppositely arranged.

[0040] According to a specific embodiment of the present utility model, the first three-way joint 2-11 is a flat three-way joint or a right-angle three-way joint, and the second four-way joint 2-18 is a right-angle four-way joint.

[0041] According to a specific embodiment of the present utility model, a second pressure monitoring device 2-31 for monitoring the pressure of the pipe manifold is provided on the sixth flange short section 2-29, and the second pressure monitoring device 2-31 is connected to the explosion-proof control and power distribution device 4 through a cable. The second pressure monitoring device 2-31 can adopt a Rosemount 3051 pressure transmitter.

[0042] According to a specific embodiment of the present utility model, flange supports 2-34 are provided on the flanges for connecting the first throttle valve 2-6 and the third manual flat valve 2-8, the inlet flat four-way joint 2-3 and the second flat three-way joint 2-13, and the second throttle valve 2-7 and the fourth manual flat valve 2-9; the flange supports 2-34 are fixedly connected to the skid-mounted structure 1; body supports 2-35 are provided at the bottoms of the second four-way joint 2-18 and the third four-way joint 2-32, and at the bottom of the flange connecting the eighth manual flat valve 2-28 and the sixth flange short section 2-29; the body supports 2-35 are fixedly connected to the bottom of the skid-mounted structure 1.

[0043] According to a specific embodiment of the present utility model, the oil outlet and return pipelines of the liquid-gas control system 3 are fixed in the skid-mounted structure through clamps to prevent excessive vibration during use and cause risks to equipment and personnel.

[0044] According to a specific embodiment of the present utility model, a wire duct for the line connection of the explosion-proof control and power distribution device 4 is provided on the skid-mounted structure 1; corner fittings 1-1, forklift holes 1-2, lower lifting points 1-3, a top cover 1-4, a ladder 1-5, wire stoppers 1-6, support plates 1-7 and towing hooks 1-8 are provided on the skid-mounted structure 1. Among them, the top cover 1-4 is arranged on the top of the skid-mounted structure 1; the corner fittings 1-1 are arranged at the four top corners of the top of the skid-mounted structure 1 for upper lifting; the lower lifting points 1-3 and the forklift holes 1-2 are both arranged on the bottom side wall of the skid-mounted structure 1, and are welded through to ensure the overall strength for the lifting of the equipment in different environments; the ladder 1-5 is arranged on the side of the skid-mounted structure 1 and is fixedly welded to the skid-mounted structure. The wire stoppers 1-6 are symmetrically arranged on both sides of the skid-mounted structure 1 to ensure balanced lifting. The support plates 1-7 are arranged between the bottom of the skid-mounted structure 1 and the columns, which does not affect the equipment installation and ensures the stability of the skid-mounted structure. The towing hook 1-8 is used to hang and tow the towing rope during the transportation of the equipment to ensure safe lifting.

[0045] According to a specific embodiment of the present utility model, the manual flat valve adopts an exposed stem structure, which can realize visual operation management and reduce the risk of misoperation by on-site personnel.

[0046] Although the content of the present utility model has been introduced in detail through the above preferred embodiments, it should be recognized that the above description should not be considered as a limitation of the present utility model. After those skilled in the art have read the above content, various modifications and alternatives to the present utility model will be obvious. Therefore, the protection scope of the present utility model should be defined by the appended claims.

Claims

1. A compact automatic throttling drilling monitoring manifold and skid-mounted equipment, characterized in that: The equipment comprises: a skid-mounted structure (1), an automatic throttling monitoring pipe assembly (2), a liquid and gas control system (3) and an explosion-proof control and power distribution device (4); The automatic throttling monitoring pipe assembly (2), the liquid and gas control system (3), and the explosion-proof control and power distribution device (4) are assembled on the skid-mounted structure (1) as a whole; The automatic throttling monitoring manifold assembly (2) comprises: an automatic throttling manifold and a monitoring manifold; the automatic throttling manifold and the monitoring manifold are connected via a third flange nipple (2-16), and the automatic throttling manifold and the monitoring manifold are both arranged vertically; the automatic throttling manifold and the monitoring manifold are both fixed to the skid-mounted structure (1) via a support member; The two hydraulic throttle valves of the automatic throttle manifold are arranged in an I-type layout, and the two hydraulic throttle valves are connected to the liquid-gas control system (3) to control the hydraulic pressure in the automatic throttle manifold; The automatic throttling monitoring manifold (2) is provided with a first pressure monitoring device for monitoring pressure; the monitoring manifold is provided with a second pressure monitoring device for monitoring pressure and a flow monitoring device for monitoring flow; The first pressure monitoring device, the second pressure monitoring device and the liquid-gas control system (3) are all connected to the explosion-proof control and power distribution device (4) via cables.

2. The compact automatic throttling drilling monitoring manifold and skid-mounted equipment according to claim 1 is characterized in that: The automatic throttling manifold comprises: an inlet flange union (2-1), an inlet plane cross-joint (2-3), a first throttling pipeline, a second throttling pipeline, a third throttling pipeline, a first tee (2-11), a first right-angle two-joint (2-12), a second plane tee (2-13), a first flange short joint (2-14) and a second flange short joint (2-15); The four interfaces of the inlet plane cross-way (2-3) are respectively connected to the inlet flange-type union (2-1) and the inlets of the first throttling pipeline, the second throttling pipeline and the third throttling pipeline; the inlet flange-type union (2-1) is connected to the wellhead equipment; The outlet of the first throttling pipeline is in communication with the first tee (2-11), the outlet of the second throttling pipeline is in communication with the second plane tee (2-13), the outlet of the third throttling pipeline is in communication with the first right-angle two-way (2-12), the first right-angle two-way (2-12) and the second plane tee (2-13) are in communication via a first flange short section (2-14), the second plane tee (2-13) and the first tee (2-11) are in communication via a second flange short section (2-15), and the first tee (2-11) and the monitoring manifold are in communication via a third flange short section (2-16); A first manual flat valve (2-4), a first throttle valve (2-6) and a third manual flat valve (2-8) are sequentially arranged on the first throttle pipeline from the inlet to the outlet; a fifth manual flat valve (2-10) is arranged on the second throttle pipeline; a second manual flat valve (2-5), a second throttle valve (2-7) and a fourth manual flat valve (2-9) are sequentially arranged on the third throttle pipeline from the inlet to the outlet; wherein the first throttle valve (2-6) and the second throttle valve (2-7) are the hydraulic throttle valves; The first throttle valve (2-6), the inlet plane four-way (2-3) and the second throttle valve (2-7), and the first three-way (2-11), the second plane three-way (2-13) and the first right-angle two-way (2-12) are all arranged vertically opposite to each other in a vertical layout, and the first throttle valve (2-6) and the first three-way (2-11), the inlet plane four-way (2-3) and the second plane three-way (2-13), and the second throttle valve (2-7) and the first right-angle two-way (2-12) are all arranged horizontally opposite to each other; The oil outlet and return pipelines of the liquid-gas control system (3) are respectively connected to the oil outlet and return ports of the first throttle valve (2-6) and the second throttle valve (2-7).

3. The compact automatic throttling drilling monitoring manifold and skid-mounted equipment according to claim 2 is characterized in that: The oil outlet and return pipelines are fixed in the skid-mounted structure through clamps.

4. The compact automatic throttling drilling monitoring manifold and skid-mounted equipment according to claim 2 is characterized in that: The inlet flange union (2-1) is provided with an interface for installing a first pressure monitoring device (2-2), and the first pressure monitoring device (2-2) is provided at the interface; the first pressure monitoring device (2-2) is connected to the explosion-proof control and power distribution device (4) via a cable.

5. The compact automatic throttling drilling monitoring manifold and skid-mounted equipment according to claim 2 is characterized in that: The monitoring manifold comprises: a second four-way pipe (2-18), a first monitoring pipeline, a second monitoring pipeline, a third four-way pipe (2-32) and an outlet flange union (2-33); The three interfaces of the second four-way (2-18) are respectively connected to the first three-way (2-11) and the inlets of the first monitoring pipeline and the second monitoring pipeline, and the remaining one interface is fixedly connected to the first flange blind plate (2-17); the three interfaces of the third four-way (2-32) are respectively connected to the outlet flange union (2-33) and the outlets of the first monitoring pipeline and the second monitoring pipeline, and the remaining one interface of the third four-way (2-32) is fixedly connected to the third flange blind plate (2-30); The first monitoring pipeline is provided with a sixth manual flat valve (2-19), a flow monitoring device (2-21), a third three-way valve (2-23), a second right-angle valve (2-25) and a seventh manual flat valve (2-27) in sequence from the inlet to the outlet; wherein the sixth manual flat valve (2-19) and the flow monitoring device (2-21) are connected via a first conversion flange (2-20); the third three-way valve (2-23) and the second right-angle valve (2-25) are connected via a fourth flange short section (2-24); the second right-angle valve (2-25) and the seventh manual flat valve (2-27) are connected via a fifth flange short section (2-26); and one interface of the third three-way valve (2-23) is fixedly connected to the second flange blind plate (2-22); The first flange blind plate (2-17) and the second flange blind plate (2-22) are both provided with pressure measuring holes, and the pressure measuring holes are used to install a pressure transmitter or a mechanical pressure gauge for pressure monitoring; An eighth manual flat valve (2-28) is provided on the second monitoring pipeline; the eighth manual flat valve (2-28) and the third four-way valve (2-32) are connected via a sixth flange nipple (2-29); The second four-way valve (2-18), the sixth manual flat valve (2-19), the flow monitoring device (2-21) and the third three-way valve (2-23), as well as the third four-way valve (2-32), the second right-angle valve (2-25) and the seventh manual flat valve (2-27) are all arranged vertically opposite to each other in a vertical layout; the second four-way valve (2-18) and the third three-way valve (2-23), as well as the third four-way valve (2-32) and the second right-angle valve (2-25) are all arranged horizontally opposite to each other.

6. The compact automatic throttling drilling monitoring manifold and skid-mounted equipment according to claim 5 is characterized in that: The first tee (2-11) is a plane tee or a right-angle tee, and the second quad (2-18) is a right-angle quad.

7. The compact automatic throttling drilling monitoring manifold and skid-mounted equipment according to claim 5 is characterized in that: The sixth flange nipple (2-29) is provided with a second pressure monitoring device (2-31) for monitoring the manifold pressure; the second pressure monitoring device (2-31) is connected to the explosion-proof control and power distribution device (4) via a cable.

8. The compact automatic throttling drilling monitoring manifold and skid-mounted equipment according to claim 5 is characterized in that: The flanges used to connect the first throttle valve (2-6) and the third manual flat valve (2-8), the inlet flat four-way valve (2-3) and the second flat three-way valve (2-13), and the second throttle valve (2-7) and the fourth manual flat valve (2-9) are all provided with flange support members (2-34); the flange support members (2-34) are fixedly connected to the skid-mounted structure (1); The bottom of the second four-way valve (2-18), the third four-way valve (2-32), and the bottom of the flange connecting the eighth manual flat valve (2-28) and the sixth flange short section (2-29) are all provided with a main body support member (2-35); the main body support member (2-35) is fixedly connected to the bottom of the skid-mounted structure (1).

9. The compact automatic throttling drilling monitoring manifold and skid-mounted equipment according to claim 5, characterized in that: The first to eighth manual flat valves all adopt a rising stem structure.

10. The compact automatic throttling drilling monitoring manifold and skid-mounted equipment according to claim 1, characterized in that: The skid-mounted structure (1) is provided with a wiring conduit for connecting the lines of the explosion-proof control and power distribution device (4); The skid-mounted structure (1) is provided with an angle piece (1-1), a forklift hole (1-2), a lower hanging point (1-3), a top cover (1-4), a ladder (1-5), a wire stopper (1-6), a support plate (1-7) and a towing hook (1-8); Wherein, the corner piece (1-1) is arranged on the top corner of the skid-mounted structure; The forklift hole (1-2) and the lower hanging point (1-3) are arranged at the bottom end of the skid-mounted structure; The top cover (1-4) is arranged on the top of the skid-mounted structure (1); The ladder (1-5) is arranged on the side of the skid-mounted structure (1); The wire stoppers (1-6) are symmetrically arranged on both sides of the skid-mounted structure (1); The support plate (1-7) is arranged between the bottom of the skid-mounted structure (1) and the column.

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